# Pure AQ vs HeatSafe

The clearest difference is in-app purchases: Pure AQ at none against HeatSafe's 7. HeatSafe's advantage is update cadence (every 9 days vs every 46 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. HeatSafe sells 7 in-app purchases, starting at $4.99 per month. Pure AQ asks for nothing beyond the download.

Pure AQ ships an update every 46 months, HeatSafe every 9 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Pure AQ | HeatSafe |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 31 MB | 39 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [CODECLOUDS IT SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1507393384) | [MATTHEW ALEXANDER,NASH MCMURTREY](https://appshunter.io/developer/1884998540) |

## What reviewers say

### Pure AQ

[App page](https://appshunter.io/ios/app/pure-aq/id1559915781)

Monitor the Air Quality Index and overall weather conditions for your current location. This application provides essential environmental data to keep you informed about the air you breathe.

**Highlights:** Air Quality Index monitoring, Weather quality tracking, Location-based data, Free to use, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HeatSafe

[App page](https://appshunter.io/ios/app/heatsafe/id6794441377)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeatSafe Single Premium | $4.99 | per month |
| HeatSafe Company Sub - 5 Users | $9.99 | per month |
| HeatSafe - Coach Portal | $9.99 | per month |
| Company HeatSafe - 10 Users | $17.99 | per month |
| HeatSafe Company 20 Users | $29.99 | per month |
| HeatSafe Company 50 Users | $59.99 | per month |
| HeatSafe Company 100 Users | $99.99 | per month |


## Frequently asked questions

### Is Pure AQ free?

Pure AQ is free to download, with no in-app purchases.

### Is HeatSafe free?

HeatSafe is free to download, with in-app purchases available.

### Do Pure AQ or HeatSafe have ads?

Neither Pure AQ nor HeatSafe shows ads.

### Which is updated more often, Pure AQ or HeatSafe?

Pure AQ ships an update every 46 months, and HeatSafe every 9 days. Most recently, Pure AQ was updated on November 7, 2026 and HeatSafe on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*